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/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Charts module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt Chart API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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#ifndef QLEGEND_P_H
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#define QLEGEND_P_H
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#include <QtCharts/QLegend>
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QT_CHARTS_BEGIN_NAMESPACE
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class QChart;
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class ChartPresenter;
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class QAbstractSeries;
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class LegendLayout;
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class QLegendMarker;
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class QLegendPrivate : public QObject
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{
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Q_OBJECT
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public:
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QLegendPrivate(ChartPresenter *presenter, QChart *chart, QLegend *q);
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~QLegendPrivate();
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void setOffset(const QPointF &offset);
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QPointF offset() const;
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int roundness(qreal size);
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QGraphicsItemGroup* items() { return m_items; }
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QList<QLegendMarker*> markers(QAbstractSeries *series = 0);
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public Q_SLOTS:
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void handleSeriesAdded(QAbstractSeries *series);
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void handleSeriesRemoved(QAbstractSeries *series);
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void handleSeriesVisibleChanged();
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void handleCountChanged();
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private:
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// Internal helpers
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void addMarkers(QList<QLegendMarker *> markers);
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void removeMarkers(QList<QLegendMarker *> markers);
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void decorateMarkers(QList<QLegendMarker *> markers);
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private:
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QLegend *q_ptr;
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ChartPresenter *m_presenter;
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LegendLayout *m_layout;
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QChart *m_chart;
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QGraphicsItemGroup *m_items;
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Qt::Alignment m_alignment;
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QBrush m_brush;
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QPen m_pen;
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QFont m_font;
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QBrush m_labelBrush;
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qreal m_diameter;
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bool m_attachedToChart;
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bool m_backgroundVisible;
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bool m_reverseMarkers;
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QList<QLegendMarker *> m_markers;
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QList<QAbstractSeries *> m_series;
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QHash<QGraphicsItem *, QLegendMarker *> m_markerHash;
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friend class QLegend;
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friend class LegendMarkerItem;
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friend class LegendLayout;
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friend class QLegendMarkerPrivate;
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friend class LegendScroller;
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};
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QT_CHARTS_END_NAMESPACE
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#endif
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